I personally like the bracelet better. I felt the magatama was too fictional, but the bracelet merely squeezes your wrist when you're body temp changes due to that feeling, and I think it was more creative. The magatama was like cross examining except with one statement. You're also not sure if you have the right evidence or not.

However, I also liked the magatama, because it takes away from the monotony of mindless investigating, which really helps me. I like them both, but I personally prefer the bracelet.

Both are awesome but the magatama comes out on top for several reasons1. You cant beat the classics2. The investigation sequences were way more entertaining with it3. The fact it has spiritual powers that can see into the soul is automaticaly awesome4. It just looks cooler

I liked the bracelet a lot more. Magatama was cool too, but it wasn't as much as fun as the bracelet.I found the bracelet more interesting, although I was left wanting more. The magatama was okay, but it didn't introduce anything actually new.